Car Seat Laws in Brazil: What Every Family Needs to Know
Updated: Aug 25
Brazil's child seat law, widely known as the Lei da Cadeirinha, treats taxis and app-based drivers exactly the same way it treats private cars — there is no taxi exemption written into the law, which surprises a lot of visiting families used to the blanket exemptions common in Europe. Whether you're navigating Rio's Avenida Atlântica, hiring a car near São Paulo's Congonhas Airport, or catching a cab in Salvador, knowing that distinction changes how you should plan transport for your kids.
The Legal Requirement
Brazil's child restraint rules are set out in Article 168 of the Código de Trânsito Brasileiro (CTB), the Brazilian Traffic Code, detailed further by CONTRAN Resolution 819/2021 — the regulation widely known as the Lei da Cadeirinha (Car Seat Law), last substantively updated in April 2021. Under this framework, any child up to 10 years old who has not yet reached 1.45 metres in height must travel in the back seat using a restraint device appropriate to their age, weight, and height.
The seat type required follows a clear progression. Infants up to 1 year old or 13 kg use a rear-facing infant carrier (bebê conforto). Children from 1 to 4 years (9–18 kg) use a forward-facing car seat (cadeirinha). Children from 4 to 7.5 years, or up to 1.45 m and 15–36 kg, use a booster seat (assento de elevação). Children over 7.5 years or taller than 1.45 m may use the vehicle's standard seatbelt, but must still ride in the back seat until age 10. All restraint devices must carry INMETRO certification — Brazil's national metrology and quality institute. For the full official text, see the Código de Trânsito Brasileiro on the Senatran portal and CONTRAN Resolution 819/2021.
How It Applies to Taxis
This is the detail that genuinely sets Brazil apart from most of Europe: there is no legal exemption for taxis under Brazilian law. Article 168 of the CTB and Resolution 819/2021 apply to taxis, app-based ride-hailing drivers, and other paid passenger transport exactly as they apply to private vehicles. A taxi driver carrying an unrestrained child under 10 is, on paper, committing the same offence a private driver would.
App-based drivers — including those working for Uber and 99 — are covered by this requirement specifically while actively working a fare. If a driver is logged in and carrying a passenger, the same restraint rules apply; outside of working hours, in a personal capacity, ordinary private-vehicle rules govern them instead.
Brazil requires a restraint under Contran Resolution 819 up to age 10, with children under 10 or 1.45 m in the rear seat, and seats certified to NBR 14400 by Inmetro. Independently of the law, the physics are unchanged: a seat approved to the applicable standard and fitted on rigid ISOFIX anchors holds its line where a belt-only fit works loose — particularly on the Marginal Tietê, the Linha Vermelha and the airport expressways.
Space is the other constraint our drivers meet at the airport rank, which is filled largely with compact and mid-sized cars: two bulky seats plus a double stroller and the luggage already fills one, so a third child needing a restraint means booking a larger vehicle in advance.
In practice, the gap between this legal requirement and what actually happens on Brazilian streets is significant and well documented. Genuinely finding a standard taxi in Rio, São Paulo, or Salvador with a properly fitted child seat is uncommon, and enforcement against this specific gap varies considerably by region and is generally less consistent than enforcement of other CTB rules.
This creates a real dilemma for visiting families: the law requires a restraint, but the standard taxi and rideshare fleet isn't reliably equipped to provide one.
The most dependable solution is pre-booking a transfer where a certified, INMETRO-approved seat is confirmed before pickup — particularly for a transfer from Galeão (Rio) or Guarulhos (São Paulo) airport, where both distance and traffic density make an unrestrained ride a real and avoidable risk.
How It Applies to Rental Cars
Rental cars carry no special exemption — the same CTB and Resolution 819/2021 requirements apply in full from the moment you collect the vehicle. As the driver, you bear personal legal responsibility for ensuring any child up to 10 or under 1.45 m is correctly restrained in the back seat.
Major rental companies at Brazilian airports offer child seats as an add-on, but availability is inconsistent and tightens further during Brazilian school holidays (July, and December through February) when domestic travel peaks. Confirm the seat in writing at booking, specify your child's current age and weight, and check that the seat carries valid INMETRO certification before driving away. For infants, bringing your own seat from home is the most dependable option for a longer drive, such as from São Paulo toward the coast.
Fines and Penalties
Improperly transporting a child under the CTB is classified as a very serious infraction (infração gravíssima). Under Article 168, the fine is R$293.47, and the driver receives 7 points on their Carteira Nacional de Habilitação (CNH), Brazil's national driving licence — a significant penalty given Brazil's points-based suspension system. The vehicle can also be retained on the spot until the situation is resolved.
This penalty applies to the driver regardless of whether they're driving a private car, a rental vehicle, a taxi, or working an active rideshare fare. For current official details, refer to the Secretaria Nacional de Trânsito (Senatran).
Quick Reference
• Up to 10 years old AND under 1.45 m → child restraint required in the back seat of all vehicles, including taxis and rideshares
• Over 7.5 years or 1.45 m or taller → vehicle seatbelt sufficient, but back seat required until age 10
• Taxis and active rideshare drivers → no legal exemption; same requirement as private cars, but enforcement and availability are inconsistent
• Rental cars → no exemption; full requirement applies from moment of collection
• Infants (up to 1 year / 13 kg) → rear-facing infant carrier (bebê conforto)
• Toddlers (1–4 years, 9–18 kg) → forward-facing car seat (cadeirinha)
• Older children (4–7.5 years, up to 1.45 m, 15–36 kg) → booster seat (assento de elevação)
• Fine for non-compliance → R$293.47 + 7 points on the CNH; vehicle may be retained
• Required certification → INMETRO
FAQ
• Do taxis in Brazil have to provide a child car seat?
Legally, yes — Brazil has no taxi exemption the way many European countries do. Article 168 of the CTB and Resolution 819/2021 apply to taxis and app-based drivers exactly as they apply to private cars. In practice, however, finding a standard taxi with a properly fitted seat is uncommon, and enforcement of this specific point is inconsistent across the country.
• Does the car seat law apply to Uber and 99 in Brazil?
Yes, while the driver is actively working a fare. App-based drivers are covered by the same restraint requirement as taxis and private cars during their working hours. Outside of that, in a personal capacity, ordinary private-vehicle rules apply to them instead.
• What age or height ends the car seat requirement in Brazil?
Both conditions generally apply together: a child needs to be over 7.5 years old or 1.45 m tall to use a standard seatbelt instead of a booster, but children must remain in the back seat until age 10 regardless of height.
• What's the fine for not having a car seat in Brazil?
The fine is R$293.47, classified as a very serious infraction, plus 7 points on the driver's CNH. The vehicle can also be retained on the spot until the issue is resolved. This applies to private drivers, rental car drivers, taxi drivers, and active rideshare drivers alike.
• Can I book a taxi with a certified car seat for a transfer from Galeão or Guarulhos Airport?
Yes. Taxibambino.com lets you specify the seat type — infant, forward-facing, or booster — when booking your transfer in Rio de Janeiro, São Paulo, or anywhere in Brazil. The seat is confirmed and fitted before pickup, which matters given how inconsistent standard taxi and rideshare availability is across Brazilian cities.
This page is reviewed and updated regularly. For the most current official rules, always check your destination country's government transport authority.
Last updated: August 2026. Reviewed by Lija Scheiman, CEO, TaxiBambino Content Audit Team.
Travel Safely with Taxibambino
Knowing the law is one thing — having the right seat ready when you land is another. Taxibambino.com connects families with certified child-seat taxis and airport transfers in Brazil and 150+ destinations worldwide. Infant seats, forward-facing seats, and boosters for all ages, booked in advance so nothing is left to chance on arrival.
Book your taxi with child car seats → https://www.taxibambino.com
Viaja com uma família numerosa? Veja a nossa frota de veículos.